Home / 39,147.99-54,024.62-21,243.15

Finding the Fourth Proportional to 39,147.99, 54,024.62 and 21,243.15

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Solution

The fourth proportional to 39,147.99, 54,024.62 and 21,243.15 is: 29,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,147.99 : 54,024.62 = 21,243.15 : x
  2. Step 2: Convert to fraction form
    39,147.99/54,024.62 = 21,243.15/x
  3. Step 3: Cross multiply
    39,147.99x = 54,024.62 × 21,243.15
  4. Step 4: Simplify right side
    39,147.99x = 1,147,653,000.14
  5. Step 5: Solve for x
    x = 1,147,653,000.14/39,147.99
  6. Step 6: Final answer
    x = 29,315.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.